Facts about Narcolepsy

1. 09

   In 2010, modafinil was shown to improve wakefulness in narcolepsy patients by increasing dopamine levels in the brain's prefrontal cortex and striatum.

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2. 08

   Excessive daytime sleepiness in narcolepsy patients results in an average annual cost of $8,000 to $15,000 per person due to lost productivity and medical expenses.

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3. 07

   Narcolepsy type 2, lacking the hypocretin deficiency found in type 1, accounts for approximately 10-15% of all narcolepsy diagnoses and typically presents with milder symptoms.

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4. 06

   Genetic testing for HLA-DQB1*06:02 allele positivity occurs in over 95% of narcolepsy type 1 cases, making it a highly specific biomarker for diagnosis.

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5. 05

   Sodium oxybate, approved by the FDA in 2002, is the only medication that can reduce both excessive daytime sleepiness and cataplexy in narcolepsy patients.

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6. 04

   Narcolepsy affects approximately 1 in 2,000 people worldwide, with onset typically occurring between ages 10 and 30 years old.

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7. 03

   During sleep studies, narcolepsy patients typically enter REM sleep within 10 minutes of falling asleep, compared to 90 minutes for people without the disorder.

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8. 02

   Approximately 70% of narcolepsy type 1 patients experience cataplexy, a sudden loss of muscle tone triggered by strong emotions like laughter or anger.

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9. 01

   The neurotransmitter hypocretin deficiency in narcolepsy type 1 was discovered in 2000 by researchers studying dogs with the condition.

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